Former boxing world champion Krzysztof Glowacki scores a sensational one-punch KO on his MMA debut

Former WBO heavyweight champion Krzysztof made an electrifying start to his MMA career at KSW Colosseum 2 on Saturday.

Making his debut inside the cage against 1-0 fighter Patryk Tolkaczewski, Glowacki immediately found him the main tools seemingly undone when Tolkaczewksi secured a quick takedown.

The 36-year-old’s lack of wrestling experience seemed to have been his downfall as his opponent shifted his guard into a mounted position and started raining down strikes.

Instead of trying to force his way into a more favorable position, the southpaw Glowacki unleashed his left hand under the mount, connecting cleanly with Tolkaczewksi’s jaw.

Tolkaczewksi collapsed in top position immediately after being hit, and Glowacki took the initiative to knock down his opponent and land a follow-up shot before the referee stepped in to stop the fight.

Krzysztof Glowacki picked up a knockout win from the bottom mount in his MMA debut on Saturday

The former WBO champion caught his opponent with a perfect left hand while being mounted

After making his professional boxing debut in 2008, Glowacki amassed an undefeated record of 26-0 winning the WBO title and defeating former world champions Richard Hall, Marco Huck and Steve Cunningham in the process.

However, the Polish fighter would be dethroned by Oleksandr Usyk in 2016 and in 2021 was beaten by Lawrence Okolie in a bid to reclaim the title.

Glowacki last competed inside the squared circle in January, where he was stopped in the fourth round by former British heavyweight champion Richard Riakporhe.

The KSW event was headlined by a trilogy between former UFC fighter Scott Askham and Mamed Khalidov, with the British fighter falling to a loss in the rubber match by flying knee knockout in the third round.

Glowacki holds a 32-4 record as a boxer and twice held the WBO heavyweight title